CN207096213U - Evaluation device for solid paraffin inhibitor - Google Patents
Evaluation device for solid paraffin inhibitor Download PDFInfo
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- CN207096213U CN207096213U CN201720937713.XU CN201720937713U CN207096213U CN 207096213 U CN207096213 U CN 207096213U CN 201720937713 U CN201720937713 U CN 201720937713U CN 207096213 U CN207096213 U CN 207096213U
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- 239000007787 solid Substances 0.000 title claims abstract description 149
- 239000012188 paraffin wax Substances 0.000 title abstract description 14
- 238000011156 evaluation Methods 0.000 title abstract description 12
- 239000003112 inhibitor Substances 0.000 title abstract 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 148
- 238000011084 recovery Methods 0.000 claims abstract description 45
- 238000012360 testing method Methods 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 238000004064 recycling Methods 0.000 claims description 12
- 239000001993 wax Substances 0.000 abstract description 19
- 239000003921 oil Substances 0.000 description 30
- 238000000034 method Methods 0.000 description 16
- 238000007710 freezing Methods 0.000 description 13
- 230000003247 decreasing effect Effects 0.000 description 12
- 238000004090 dissolution Methods 0.000 description 11
- 230000008014 freezing Effects 0.000 description 11
- 238000009833 condensation Methods 0.000 description 10
- 230000005494 condensation Effects 0.000 description 10
- 238000001556 precipitation Methods 0.000 description 10
- 230000000704 physical effect Effects 0.000 description 9
- 230000002401 inhibitory effect Effects 0.000 description 7
- 239000011435 rock Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- XMHIUKTWLZUKEX-UHFFFAOYSA-N hexacosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCC(O)=O XMHIUKTWLZUKEX-UHFFFAOYSA-N 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides an evaluation device of solid paraffin inhibitor, include: the device comprises a condensate oil driving unit, a first testing part and a second testing part; the first testing part comprises a first solid paraffin inhibitor containing unit, a first condensate oil recovery unit and a first heating unit, and the first solid paraffin inhibitor containing unit is respectively communicated with the first condensate oil recovery unit and the first heating unit; the condensate oil driving unit is communicated with the first solid paraffin inhibitor containing unit through a first driving pipeline, and a first valve is arranged on the first driving pipeline; the second testing part comprises a second solid paraffin inhibitor containing unit, a second condensate oil recovery unit, a second heating unit and a pressure supply unit, and the second solid paraffin inhibitor containing unit is respectively communicated with the second condensate oil recovery unit, the second heating unit and the pressure supply unit; condensate oil drive unit holds the unit intercommunication through second drive pipeline and second solid wax control agent, sets up the second valve on the second drive pipeline. The utility model discloses can realize the accurate evaluation to solid paraffin inhibitor.
Description
Technical field
It the utility model is related to the Performance Evaluation Technique of chemical agent in oil exploitation, more particularly to a kind of solid antiwax agent
Evaluating apparatus, belong to technical field of petroleum extraction.
Background technology
Crude oil paraffin deposit problem is always the serious problems that petroleum industry faces, and paraffin deposit mostly occurs in ground line
In line, submerged pipeline.In recent years, with the decline of each oil field stratum pressure and the change of production system, paraffin deposit problem
It is more and more.Comparative maturity, the liquid that each elephant has independent research are prevented for research to chemical liquid wax-proofing agent at present
Cerate, but problem always be present in the filling for some high pressure belt packer well liquid body wax-proofing agents, the presence of (1) packer makes
Liquid wax-proofing agent can not add from oil jacket annular space；(2) it is higher to performance requirements such as the air-tightness of device using drop Adding Way；
(3) the high equivalent risk of lower tubular column frequency be present with dosing valve.
Due to the presence above mentioned problem of existing wax-proofing agent, therefore in the last few years, the research to solid antiwax agent has obtained green grass or young crops
Look at, but some problems be present in the evaluation for solid antiwax agent, the measure of the valid density of (1) solid antiwax agent does not measure
Come；(2) measuring of dissolution velocity of solid antiwax agent does not come out, and solid antiwax agent performance can not be evaluated under (3) high-temperature and high-pressure conditions
Deng problems govern the development of solid antiwax agent technology.
Utility model content
The utility model provides a kind of evaluating apparatus of solid antiwax agent, and to overcome in the prior art, solid can not be prevented
Cerate carries out the defects of thoroughly evaluating.
The utility model provides a kind of evaluating apparatus of solid antiwax agent, including：Condensate driver element, the first test department
With the second test department；
First test department holds unit, the first condensate recovery unit, the first heating including the first solid antiwax agent
Unit, first solid antiwax agent hold unit and connected respectively with the first condensate recovery unit, the first heating unit；
The condensate driver element is held unit and connected by the first driving pipeline with first solid antiwax agent to be used for described
First solid antiwax agent holds unit injection condensate, and the first valve is provided with the first driving pipeline；
Second test department holds unit, the second condensate recovery unit, the second heating including the second solid antiwax agent
Unit, voltage supply unit, it is single with the two condensates recovery unit, the second heating respectively that second solid antiwax agent holds unit
Member, the connection of voltage supply unit；The condensate driver element holds list by the second driving pipeline with second solid antiwax agent
Member connects injects the condensate for holding unit to second solid antiwax agent, is provided with the second driving pipeline
Second valve.
In an embodiment, second solid antiwax agent, which holds unit, includes the first core holding unit and second
Core holding unit；
The condensate driver element connects with first core holding unit and the second core holding unit respectively, for dividing
Do not inject the condensate to first core holding unit and the second core holding unit, the condensate driver element with it is described
Be provided with the first injection valve between first core holding unit, the condensate driver element and second core holding unit it
Between be provided with the second injection valve；
The first vent valves are provided between the second condensate recovery unit and first core holding unit, it is described
The second vent valves are provided between second condensate recovery unit and second core holding unit.
In an embodiment, the voltage supply unit includes confined pressure feed unit and back pressure feed unit, described to enclose
Feed unit is pressed to provide confined pressure, the back pressure feed unit point to first core holding unit and the second core holding unit respectively
Back pressure is not provided to first core holding unit and the second core holding unit；
The first confined pressure valve is provided between the confined pressure feed unit and first core holding unit, the confined pressure supplies
To being provided with the second confined pressure valve between unit and second core holding unit.
In an embodiment, the second condensate recovery unit passes through back-pressure valve and first rock core respectively
Clamper and the second core holding unit connection, the second condensate recovery unit be used for receive first core holding unit and
The condensate of second core holding unit discharge；
The back-pressure valve also connects with the back pressure feed unit.
In an embodiment, the first condensate recovery unit includes bottom recycling can and recovered overhead tank,
The bottom recycling can is connected by bottom discharge valve with the bottom that first solid antiwax agent holds unit, the top
Recycling can is connected by top discharge valve with the top that first solid antiwax agent holds unit.
In an embodiment, in addition to communicating pipe and flowmeter；
The communicating pipe holds unit with first solid antiwax agent and connected；The flowmeter is arranged at the back-pressure valve
Between the second condensate recovery unit.
In an embodiment, second test department also includes first pressure table, second pressure gauge, the 3rd pressure
Table, the 4th pressure gauge, the 5th pressure gauge；
The first pressure table is arranged on second valve and between second solid antiwax agent holds unit, described
Second pressure gauge is arranged between the first confined pressure valve and first core holding unit；3rd pressure gauge is arranged on
Between the confined pressure feed unit and the second confined pressure valve；4th pressure gauge be arranged on the back pressure feed unit with
Between the back-pressure valve；5th pressure gauge connects with first vent valves and the second vent valves respectively.
The evaluating apparatus of solid antiwax agent provided by the utility model quantitative measurment can go out solid paraffin control in the lab
The performance parameter of agent, realize the accurate evaluation to various oil field solid antiwax agents.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of evaluating apparatus one of the utility model solid antiwax agent；
Fig. 2 is the structural representation of another embodiment of evaluating apparatus of the utility model solid antiwax agent.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with of the present utility model attached
Figure, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that described embodiment is this
Utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, the common skill in this area
The every other embodiment that art personnel are obtained under the premise of creative work is not made, belong to the utility model protection
Scope.
Embodiment one
Fig. 1 is the structural representation of the embodiment of evaluating apparatus one of the utility model solid antiwax agent, refer to Fig. 1, this
Utility model provides a kind of evaluating apparatus of solid antiwax agent, including：Condensate driver element 0, the first test department and second are surveyed
Examination portion；First test department holds unit 10, the first condensate recovery unit 11, the first heating unit including the first solid antiwax agent
12, the first solid antiwax agent holds unit 10 and connected respectively with the first condensate recovery unit 11, the first heating unit 12；Condensation
Oily driver element 0 is held unit 10 and connected by the first driving pipeline with the first solid antiwax agent to be used for the first solid antiwax agent
Hold unit 10 and inject condensate, the first valve 011 is provided with the first driving pipeline；Second test department is prevented including the second solid
Cerate holds unit 20, the second condensate recovery unit 21, the second heating unit 22, voltage supply unit 23, the second solid antiwax agent
Hold unit 20 to connect with the second condensate recovery unit 21, the second heating unit 22, voltage supply unit 23 respectively, condensate driving
Unit 0 holds unit 20 with the second solid antiwax agent by the second driving pipeline and connected for holding list to the second solid antiwax agent
Member 20 injects condensate, and the second valve 021 is provided with the second driving pipeline.
Specifically, evaluating apparatus of the present utility model is two large divisions, i.e. the first test department and the second test department, wherein,
First test department is used to test the normal pressure of solid antiwax agent, and the second test department is used for the Hi-pot test to solid antiwax agent, and
Filling state by the folding of the first valve 011 and the second valve 021 controls the reduction of fractions to a common denominator of condensate driver element 0 not carried to the two parts
For condensate to provide the working media of solid antiwax agent.
In the first test department, the first solid antiwax agent holds unit 10 and is used to hold solid antiwax agent and other materials,
After condensate is injected the first solid antiwax agent by condensate driver element 0 holds unit 10, the first heating unit 12 can be to the
One solid antiwax agent holds unit 10 and is heated to preset temperature, when the first solid antiwax agent holds the solid antiwax agent in unit 10
Reach preset temperature and after being incubated preset time, the condensate that the first solid antiwax agent is held in unit 10 can be discarded to the
One condensate recovery unit 11, relevant parameter measure is carried out to the condensate in the first condensate recovery unit 11, so as to pass through
Condensate obtains solid antiwax agent in preset temperature and pre- in the change value of the relevant parameter front and rear with solid antiwax agent reaction
If the wax control result under the time.Wherein, the first heating unit 12 can use resistive heating device, first heating unit 12
The inside that the first solid antiwax agent holds unit 10 can be arranged on, the first solid antiwax agent can also be arranged on and hold unit 10
Outside, the utility model does not limit the first heating unit 12 and the first solid antiwax agent holds the specific connection of unit 10 and closed
System.It is envisioned that should have between the first condensate recovery unit 11 and the first solid antiwax agent hold unit 10
Controllable valve, so as to control the discharge of condensate.
In second test department, operation principle and annexation and the operation principle and annexation of above-mentioned first test department
It is substantially similar, unlike, need to hold unit 20 to the second solid antiwax agent by voltage supply unit 23 in the second test department
In solid antiwax agent be forced into preset pressure, so as to obtain solid antiwax agent preset temperature, preset pressure and it is default when
Between under wax control result.
When specifically carrying out evaluation test, preset time and preset temperature in the first test department can be with the second tests
Preset time and preset temperature in portion is identical or different.
Embodiment two
Fig. 2 is the structural representation of another embodiment of evaluating apparatus of the utility model solid antiwax agent, refer to Fig. 2,
On the basis of implementing one, the second solid antiwax agent in the present embodiment, which holds unit 20, includes the He of the first core holding unit 201
Second core holding unit 202；Condensate driver element 0 connects with the first core holding unit 201 and the second core holding unit 202 respectively
It is logical, for injecting condensate to the first core holding unit 201 and the second core holding unit 202 respectively, condensate driver element 0 with
The first injection valve 201a, the core holding unit of condensate driver element 0 and second are provided between first core holding unit 201
The second injection valve 202a is provided between 202；Set between second condensate recovery unit 21 and the first core holding unit 201
There is the first vent valves 201b, the second discharge is provided between the second condensate recovery unit 21 and the second core holding unit 202
Valve 202b.
Due to needing to be tested under elevated pressure conditions in the second test department, therefore, the second solid antiwax agent holds unit
20 can use core holding unit, wherein, core holding unit breaks down during in order to prevent experiment, can use two it is in parallel
Core holding unit, by adding the injection valves of the first injection valve 201a and second respectively in the entrance of two core holding units
202a, so as to control condensate driver element 0 to inject condensate to two core holding units respectively, make two core holding unit lists
Solely work is independent of each other.It is envisioned that by setting the first vent valves in the outlet of the first core holding unit 201
201b, second vent valves 202b is set in the outlet of the second core holding unit 202, controls the row of two core holding units respectively
Sky work is independent of each other.
Further, voltage supply unit 23 includes confined pressure feed unit 231 and back pressure feed unit 232, confined pressure feed unit
231 provide confined pressure to the first core holding unit 201 and the second core holding unit 202 respectively, and back pressure feed unit 232 is respectively to the
One core holding unit 201 and the second core holding unit 202 provide back pressure；The core holding unit 201 of confined pressure feed unit 231 and first
Between be provided with the first confined pressure valve 201c, being provided with second between the core holding unit 202 of confined pressure feed unit 231 and second encloses
Pressure valve 202c.
Above-mentioned setting specifically can be by respectively in the clamping 201 of the rock core of confined pressure feed unit 231 and first and the second rock core
Confined pressure pipeline is set to complete respective confined pressure supply between clamper 202, it is contemplated that the first confined pressure valve 201c and the
Two confined pressure valve 202c are separately positioned on the confined pressure pipeline each connected.Equally, by respectively back pressure feed unit 232 with
Back pressure pipeline is set to complete respective back pressure supply between the clamping 201 of first rock core and the second core holding unit 202.Certainly, locate
In the consideration of safety operation, confined pressure total valve 231a and back pressure total valve 232a can also be set, are respectively used to control confined pressure
The open and-shut mode of feed unit 231 and back pressure feed unit 232.Specifically, confined pressure feed unit 231 and back pressure feed unit
232 can be displacement pump.
Therefore, confined pressure total valve 231a, back pressure total valve 232a, the first confined pressure valve 201c, the second confined pressure valve are passed through
202c open and-shut mode, evaluating apparatus of the present utility model can be respectively completed to the first core holding unit 201 and the second rock core
The Stress control of clamper 202.
Further, the second condensate recovery unit 21 clamps 201 devices and the by back-pressure valve 24 and the first rock core respectively
Two core holding units 202 connect, and the second condensate recovery unit 21 is used to receive the first core holding unit 201 and the second rock core folder
The condensate that holder 202 is discharged；Back-pressure valve also 24 connects 232 with back pressure feed unit.Specifically, the second condensate recovery unit
21 are connected by outlet of the back-pressure valve 24 respectively with the first core holding unit 201 and the second core holding unit 202, when needing to discharge
During condensate in a certain core holding unit, the vent valves of corresponding core holding unit are opened, are then adjusted by back-pressure valve 24
Pressure, condensate in corresponding core holding unit is set to be emitted into the second condensate recovery unit 21, consequently facilitating entering to condensate
Row sampling detection., can be solidifying in back-pressure valve 24 and second for the ease of the volume of the condensate discharged in metering core holding unit
Flow meters 25 are set between condensate oil recovery unit 21., can also be in back-pressure valve 24 in order to be further ensured that the security of operation
One discharge total valve 26 is set between the vent valves of core holding unit, in the condensate recovery unit 21 of flowmeter 25 and second
Between a recovery valve 21a is set.
It is understood that the control and cooperation between above-mentioned each unit can all pass through the connecting pipe between each unit
And the valve in corresponding pipeline is carried out.
Further, in the first test department, the first condensate recovery unit 11 can include bottom recycling can 110 and top
Portion's recycling can 111, bottom recycling can 110 hold the bottom of unit 10 by bottom discharge valve 110a and the first solid antiwax agent
Connection, the top that recovered overhead tank 111 holds unit 10 by top discharge valve 111a with the first solid antiwax agent connects.
During experiment, condensate driver element 0 can hold unit 10 to the first solid antiwax agent and drive in condensate until being full of the first solid
Wax-proofing agent holds unit 10, then when the first heating unit 12 heats the first solid antiwax agent and holds unit 10, the first solid
Volumetric expansion can occur for the condensate that wax-proofing agent is held in unit 10, now can will be unnecessary with open top part vent valves 111a
Condensate is emitted into recovered overhead tank 111, and bottom recycling can 110 is then used to receive and what solid antiwax agent reaction finished coagulates
Condensate oil.It is worth noting that, hold the condensation oil volume in unit 10 for clear and definite first solid antiwax agent, can set one with
First solid antiwax agent holds the communicating pipe 13 of the connection of unit 10, is easy to the first solid antiwax agent of observation to hold the liquid in unit 10
Position.
Furthermore it is also possible to set injection valve 10a on the first driving pipeline, the first valve 011 and the are specifically located at
Between one solid antiwax agent holds the condensation oil-in of unit 10, for further controlling condensate driver element 0 solid to first
Body wax-proofing agent holds driving in for the condensate of unit 10.In the present embodiment, condensate driver element 0 and bottom recycling can 110
All it is that the condensation oil-in that unit 10 is held with the first solid antiwax agent is connected, controls first to consolidate by controlling different valves
Body wax-proofing agent holds the injection and discharge of the condensate of unit 10.
Further, the second test department also includes first pressure table 27a, second pressure gauge 27b, the 3rd pressure gauge 27c, the
Four pressure gauge 27d, the 5th pressure gauge 27e；First pressure table 27a is arranged on the second valve 021 and held with the second solid antiwax agent
Between unit 20, second pressure gauge 27b is arranged between the first confined pressure valve 201c and the first core holding unit 201；3rd pressure
Power table 27c is arranged between the confined pressure valve 202c of confined pressure feed unit 231 and second；4th pressure gauge 27d is arranged on back pressure confession
To between unit 232 and back-pressure valve 24；5th pressure gauge 27e respectively with the first vent valves 201b and the second vent valves 202b
Connection.
Embodiment three
The present embodiment is the method evaluated solid antiwax agent of evaluating apparatus using above-described embodiment two, this method
Including：
1) condensate is injected into the first solid antiwax agent using condensate driver element 0 and holds unit 10, wherein first is solid
Body wax-proofing agent holds in unit 10 and fills solid antiwax agent and proppant；
2) the first solid antiwax agent is held by unit 10 by the first heating unit 12 and is heated to the first preset temperature,
After one preset time, the first physical-property parameter of condensate is measured；
3) the variation relation curve of the first physical-property parameter and time/temp is established.
The above method is the evaluation method for the solid antiwax agent carried out at ambient pressure using the first test department.
The concrete operations of step 1) are：The second valve 021 is closed, opens the first valve 011, injects valve 10a, is opened solidifying
Condensate oil driver element 0 make condensate be injected into the first solid antiwax agent hold unit 10 until communicating pipe 13 in liquid level in highest
Locate (i.e. the first solid antiwax agent holds unit 10 and is filled with), close the first valve 011, injection valve 10a.Wherein, first is solid
Body wax-proofing agent holds the mixture that solid antiwax agent and proppant are held in unit 10, and solid antiwax agent accounts for the quality hundred of proppant
Divide than being 2%.
Before step 1), it is also necessary to which the paraffin content and wax precipitation point of condensate are measured.
The concrete operations of step 2) are：Open the first heating unit 12 first solid antiwax agent is held into unit 10 and be heated to
The first preset temperature wax precipitation point of condensate (be more than), in order to suitably open top discharge valve 111a in heating process
The gas for expanding heating enters to recovered overhead tank 111.After the first preset temperature is incubated the first preset time, injection is opened
Valve 10a, bottom discharge valve 110a, bottom recycling can is discarded to by the condensate that the first solid antiwax agent is held in unit 10
110。
Condensate in bottom recycling can 110 is sampled, the first physical-property parameter of oil sample measured, this first
Physical-property parameter can include the numerical value such as inhibiting rate for wax precipitation, the freezing point decreasing value of oil sample.Specific measuring method may be referred to standard
Q/SY 158-2013《Recover the oil with clear, wax-proofing agent technical specification》And SY/T 6300-2009《Recover the oil with clear, wax-proofing agent technology bar
Part》.
After measurement, the condensate in bottom recycling can 110 is emptied, repeat step 1)-step 2) n times, until surveying
Inhibiting rate for wax precipitation, the freezing point decreasing value of amount change, wherein, the first preset time of n times is different from, and the first of n times is default
Temperature is all identical, or, the first preset time of n times is all identical, and the first preset temperature of n times is different from that (N number of first is default
Temperature will be more than the wax precipitation point of condensate).
So as to, obtain N group oil samples inhibiting rate for wax precipitation-time/temp data, and N group oil samples freezing point decreasing value-when
Between/temperature data
In step 3), according to the corresponding relation curve of above-mentioned data creating, including：Inhibiting rate for wax precipitation-time graph, inhibiting rate for wax precipitation-
Temperature curve, freezing point decreasing value-time graph and freezing point decreasing value-temperature curve, can be consolidated from above-mentioned curve
Wax control result of the body wax-proofing agent in certain temperature or usage time, so as to provide and can join for the application in the future in oil field
The data basis examined.
Example IV
The present embodiment is the method evaluated solid antiwax agent of evaluating apparatus using above-described embodiment two, this method
Including：
1) condensate is injected into the first solid antiwax agent using condensate driver element 0 and holds unit 10, wherein first is solid
Body wax-proofing agent holds in unit 10 and fills solid antiwax agent and proppant, records the condensation oil volume driven in；
2) the first solid antiwax agent is held by unit 10 by the first heating unit 12 and is heated to the first preset temperature,
After one preset time, the condensate the first solid antiwax agent held in unit 10 is released；
3) 1) -2 are repeated the above steps) n times altogether, wherein, the first preset time of n times is different from, and N is more than or equal to 1
Positive integer；
4) difference of the condensation oil volume driven in by n times, solid antiwax agent is obtained under the first preset temperature in unit
The rate of dissolution of time.
The above method is the evaluation method for the solid antiwax agent carried out at ambient pressure using the first test department.
Step 1) is identical with the step 1) operating method in embodiment three, simply needs to record the condensation oil body driven in every time
Product.
Step 2) is identical with the step 2) operating method in embodiment three, the difference is that related condensate need not be tested
Physical-property parameter.
In step 3), 1) -2 are repeated the above steps) n times altogether.
In step 4), because under conditions of condensate and heating is injected repeatedly, the first solid antiwax agent holds unit
Meeting in 10 is gradually dissolved, i.e., every time when driving in condensate, the first solid antiwax agent, which is held, accommodates condensate in unit 10
Volume can be less and less, that is, drives in the volume of condensate and can be reduced compared with last time, and the difference of condensation oil volume is what is dissolved twice
Solid antiwax agent.Therefore solid antiwax agent can be obtained under the first preset temperature in the rate of dissolution of unit interval.
Embodiment five
The present embodiment is the method evaluated solid antiwax agent of evaluating apparatus using above-described embodiment two, this method
Including：
1) condensate is injected into the first solid antiwax agent using condensate driver element 0 and holds unit 10, wherein first is solid
Body wax-proofing agent holds in unit 10 and fills solid antiwax agent and proppant, records the condensation oil volume driven in；
2) the first solid antiwax agent is held by unit 10 by the first heating unit 12 and is heated to the first preset temperature,
After one preset time, the condensate the first solid antiwax agent held in unit 10 is released；
3) 1) -2 are repeated the above steps) n times altogether, wherein, the first preset time of n times is different from, and N is more than or equal to 1
Positive integer；
4) difference of the condensation oil volume driven in by n times, solid antiwax agent is obtained under the first preset temperature in unit
The rate of dissolution of time；
5) repeat step above-mentioned steps 1) -4) it is common M times, first preset temperature of wherein M times is different from, M be more than etc.
In 1 positive integer；
6) temperature-rate of dissolution curve of solid antiwax agent is established.
The above method is the evaluation method for the solid antiwax agent carried out at ambient pressure using the first test department.
Above-mentioned steps 1) -5) it is corresponding with previous embodiment four operate it is identical.In step 5), obtain on solid antiwax agent
M groups temperature-rate of dissolution data.
In step 6), according to M groups temperature-rate of dissolution data of solid antiwax agent, establish the temperature of solid antiwax agent-
Rate of dissolution curve, rate of dissolution of the solid antiwax agent in a certain temperature can be obtained from the curve, so as to in the future in oil
The data basis referred to using providing of Tanaka.
Embodiment six
N groups in Example three at the same temperature when m- inhibiting rate for wax precipitation data and when m- freezing point decreasing value number
According to time data therein to be multiplied by rate of dissolution data mutually synthermal in embodiment five, that is, obtains N groups concentration of ordinary dissolution-anti-
Wax rate data and concentration of ordinary dissolution-freezing point reduce Value Data, according to this two groups of data, establish concentration of ordinary dissolution-inhibiting rate for wax precipitation curve and
Concentration of ordinary dissolution-freezing point decreasing value curve, so as to provide the data referred to for the application in the future in solid antiwax agent oil field
Basis.
Embodiment seven
The present embodiment is the method evaluated solid antiwax agent of evaluating apparatus using above-described embodiment two, this method
Including：
1) condensate is injected into the second solid antiwax agent using condensate driver element 0 and holds unit 20, wherein second is solid
Body wax-proofing agent holds in unit 20 and fills solid antiwax agent and proppant；
2) second solid antiwax agent is held into unit 20 by the second heating unit 22 and voltage supply unit 23 respectively to be heated to
Second preset temperature and preset pressure, after the second preset time, measure the second physical-property parameter of condensate；
3) the variation relation curve of the second physical-property parameter and Pressure/Temperature is established.
The above method is the evaluation method for the solid antiwax agent carried out using the second test department.
The concrete operations of step 1) are (the first core holding unit in unit 20 to be held using the second solid antiwax agent
201)：The first valve 011 is closed, opens the second valve 021, the first injection valve 201a, opening condensate driver element 0 makes to coagulate
Condensate oil is injected into the first core holding unit 201.Wherein, solid antiwax agent and proppant are held in the first core holding unit 201
Mixture, the mass percent that solid antiwax agent accounts for proppant are 2%.
Before step 1), it is also necessary to which the paraffin content and wax precipitation point of condensate are measured.
The concrete operations of step 2) are：Opening the second heating unit 22, that first core holding unit 201 is heated into second is pre-
If temperature (wax precipitation point for being more than condensate), opens confined pressure feed unit 231 and back pressure feed unit 232 and corresponding first
The pressure valve of core holding unit 201, in the first core holding unit 201 pressure is set to reach preset pressure.In the first default temperature
After degree, preset pressure are incubated the second preset time, back-pressure valve 24 is adjusted, discharge total valve 26 and recovery valve 21a are opened, by the
201 condensate is discarded to the second condensate recovery unit 21 in one core holding unit.
Condensate in second condensate recovery unit 21 is sampled, the second physical-property parameter of oil sample is surveyed
Amount, second physical-property parameter can include the numerical value such as the freezing point decreasing value of oil sample.Specific measuring method may be referred to mark
Quasi- Q/SY 158-2013《Recover the oil with clear, wax-proofing agent technical specification》And SY/T6300-2009《Recover the oil with clear, wax-proofing agent technology bar
Part》.
After measurement, the condensate in the second condensate recovery unit 21 is emptied, repeat step 1)-step 2) n times,
Until the freezing point decreasing value of measurement changes, wherein, the second preset temperature of n times is different from, and the preset pressure of n times is all
It is identical, or, the second preset temperature of n times is all identical, and the preset pressures of n times is different from that (N number of second preset temperature will be big
In the wax precipitation point of condensate).
So as to freezing point decreasing value-time/pressure data of acquisition N group oil samples
In step 3), according to the corresponding relation curve of above-mentioned data creating, including：Freezing point decreasing value-pressure curve and
Freezing point decreasing value-temperature curve, solid antiwax agent can be obtained from above-mentioned curve in certain temperature or pressure
Wax control result, so as to provide the data basis referred to for the application in the future in oil field.
Certainly, using device of the present utility model carry out evaluation method be not limited to it is above-mentioned several, it is every to use this reality
The data of related condensate and solid antiwax agent are measured with new device, the method that can serve as evaluating solid antiwax agent.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (7)
- A kind of 1. evaluating apparatus of solid antiwax agent, it is characterised in that including：Condensate driver element, the first test department and Two test departments；First test department holds unit, the first condensate recovery unit, the first heating unit including the first solid antiwax agent, First solid antiwax agent holds unit and connected respectively with the first condensate recovery unit, the first heating unit；It is described Condensate driver element is held unit and connected by the first driving pipeline with first solid antiwax agent to be used for described first Solid antiwax agent holds unit injection condensate, and the first valve is provided with the first driving pipeline；Second test department including the second solid antiwax agent hold unit, the second condensate recovery unit, the second heating unit, Voltage supply unit, second solid antiwax agent hold unit respectively with the two condensates recovery unit, the second heating unit, supply Press unit connection；The condensate driver element holds unit with second solid antiwax agent by the second driving pipeline and connected The condensate is injected for holding unit to second solid antiwax agent, the second valve is provided with the second driving pipeline Door.
- 2. evaluating apparatus according to claim 1, it is characterised in that second solid antiwax agent, which holds unit, includes the One core holding unit and the second core holding unit；The condensate driver element connects with first core holding unit and the second core holding unit respectively, for respectively to First core holding unit and the second core holding unit inject the condensate, the condensate driver element and described first The first injection valve is provided between core holding unit, is set between the condensate driver element and second core holding unit It is equipped with the second injection valve；It is provided with the first vent valves between the second condensate recovery unit and first core holding unit, described second The second vent valves are provided between condensate recovery unit and second core holding unit.
- 3. evaluating apparatus according to claim 2, it is characterised in that the voltage supply unit includes confined pressure feed unit and returned Feed unit is pressed, the confined pressure feed unit provides confined pressure to first core holding unit and the second core holding unit respectively, The back pressure feed unit provides back pressure to first core holding unit and the second core holding unit respectively；The first confined pressure valve is provided between the confined pressure feed unit and first core holding unit, the confined pressure supply is single It is first that the second confined pressure valve is provided between second core holding unit.
- 4. evaluating apparatus according to claim 3, it is characterised in that the second condensate recovery unit passes through back-pressure valve Connected with first core holding unit and the second core holding unit respectively, the second condensate recovery unit is used to receive institute State the first core holding unit and the condensate of the second core holding unit discharge；The back-pressure valve also connects with the back pressure feed unit.
- 5. evaluating apparatus according to claim 4, it is characterised in that the first condensate recovery unit returns including bottom Closed cans and recovered overhead tank, the bottom recycling can hold unit by bottom discharge valve and first solid antiwax agent Bottom is connected, and the recovered overhead tank is held by top discharge valve with first solid antiwax agent to be connected at the top of unit It is logical.
- 6. evaluating apparatus according to claim 5, it is characterised in that also including communicating pipe and flowmeter；The communicating pipe holds unit with first solid antiwax agent and connected；The flowmeter is arranged at the back-pressure valve and institute State between the second condensate recovery unit.
- 7. evaluating apparatus according to claim 6, it is characterised in that second test department also includes first pressure table, Second pressure gauge, the 3rd pressure gauge, the 4th pressure gauge, the 5th pressure gauge；The first pressure table is arranged on second valve and between second solid antiwax agent holds unit, and described second Pressure gauge is arranged between the first confined pressure valve and first core holding unit；3rd pressure gauge is arranged on described Between confined pressure feed unit and the second confined pressure valve；4th pressure gauge be arranged on the back pressure feed unit with it is described Between back-pressure valve；5th pressure gauge connects with first vent valves and the second vent valves respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720937713.XU CN207096213U (en) | 2017-07-28 | 2017-07-28 | Evaluation device for solid paraffin inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720937713.XU CN207096213U (en) | 2017-07-28 | 2017-07-28 | Evaluation device for solid paraffin inhibitor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307737A (en) * | 2017-07-28 | 2019-02-05 | 中国石油天然气股份有限公司 | Evaluation device and evaluation method for solid paraffin inhibitor |
| CN110687001A (en) * | 2018-07-04 | 2020-01-14 | 中国石油天然气股份有限公司 | Method and device for measuring dissolution rate of solid wax inhibitor |
| CN111101922A (en) * | 2018-10-26 | 2020-05-05 | 中国石油天然气股份有限公司 | Method and system for evaluating wax-proof effect of solid wax-proof agent |
-
2017
- 2017-07-28 CN CN201720937713.XU patent/CN207096213U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307737A (en) * | 2017-07-28 | 2019-02-05 | 中国石油天然气股份有限公司 | Evaluation device and evaluation method for solid paraffin inhibitor |
| CN109307737B (en) * | 2017-07-28 | 2024-03-26 | 中国石油天然气股份有限公司 | Evaluation device and evaluation method for solid wax inhibitor |
| CN110687001A (en) * | 2018-07-04 | 2020-01-14 | 中国石油天然气股份有限公司 | Method and device for measuring dissolution rate of solid wax inhibitor |
| CN111101922A (en) * | 2018-10-26 | 2020-05-05 | 中国石油天然气股份有限公司 | Method and system for evaluating wax-proof effect of solid wax-proof agent |
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